Novel sound barrier unit plate
By providing elastic parts between the shell side plate of the acoustic barrier unit plate and the steel column, the preload pressure and buffer displacement are provided, the pulsed wind pressure and pulsed wind pressure at the expansion joints of high-speed railways and bridges in the prior art is solved. The problems of position shift and poor deformation resistance caused by train pulsating loads have achieved stable and fixed position and long-life use in large displacement and large displacement structures.
Patent Information
- Application Number
- CN202310684084.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-11
- Publication Date
- 2024-12-20
AI Technical Summary
The existing acoustic barrier unit plates are positionally offset by pulse wind pressure and train pulsating load on both sides of high-speed railway tracks and at the expansion joints of bridges, which are prone to overload or fall off, and have poor resistance to deformation, making it difficult to have large displacement and large displacement structures. Maintain a stable and fixed position in the middle.
Design a new type of acoustic barrier unit plate, with elastic parts arranged between its shell side plate and the steel column, such as metal springs, metal shrapnel, rubber elastic body or air spring, to provide preload pressure and buffer displacement, ensuring that the unit plate is adjacent The columns are positioned firmly, and the damping effect of the elastic parts is damped and noise-reduced.
Effectively reduce the impact damage of wind pressure load on the unit plate, prevent deformation and fall off caused by excessive stress, ensure that the acoustic barrier unit plate is always centered between the two steel columns, extends service life, and is suitable for large displacement and large displacement structure.
Smart Images
Figure CN119162937A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of sound barriers, and specifically relates to a novel sound barrier unit plate, which is particularly suitable for pulse wind pressure occasions, such as both sides of high-speed railways and mobile displacement structures, such as bridge expansion joints. Background Art
[0002] The existing metal sound barrier includes an H-shaped steel column and a metal unit body inserted into the steel column. The unit body mainly includes a back plate, a panel with holes, sound insulation materials inside the plate body, and some connectors. Since the unit body is generally a flat plate, it has poor deformation resistance and is easy to bend after being subjected to wind loads for a long time. Especially on both sides of the high-speed railway track, the sound barrier must withstand the pulse wind pressure caused by the fast-moving train and various impacts caused by the external environment.
[0003] In the related art, the sound barrier unit plate and the steel column are mostly connected by plug-in socket connection, or riveting, anchoring and other related fixing measures are adopted. However, when applied to special structures with large displacement and displacement such as bridge expansion joints, the sound barrier unit plate may be displaced in the direction of train operation due to the pulsating load of the train, causing the sound barrier unit plate to shift to one end of the steel column in the direction of train operation, and there is a risk of being tightly pressed against the column. Therefore, there is a special need for a sound barrier unit plate structure that can reduce the displacement amplitude, can be elastically buffered, and can automatically center. Summary of the invention
[0004] The purpose of the present invention is to provide a device that can effectively resist pulse wind pressure loads and has the characteristics of buffering displacement effect, which is particularly suitable for bridge expansion joint structures.
[0005] To achieve the above purpose, the technical solution adopted by the present invention is: A new type of sound barrier unit panel, including an outer shell and a sound absorber arranged in the outer shell, characterized in that an elastic member is arranged between the side panel of the outer shell and the steel column, and the elastic member includes one or more metal springs, metal shrapnel, rubber elastomer or air spring arranged on the side panel.
[0006] Additional technical features of the novel sound barrier unit panel include: The elastic member formed by the metal spring further includes a shoe expansion plate connected to one end of the metal spring, the other end of the metal spring is connected to the side plate, and the shoe expansion plate is parallel to the side plate; ——The expansion shoe plate is pressed against the web of the steel column, and the expansion shoe plate and the web are provided with through holes corresponding to the positions, and the metal spring has a built-in guide rod, one end of the guide rod is connected to the side plate, and the other end thereof passes through the through hole; --The elastic member composed of metal spring sheet is a folded sheet with a herringbone cross section, one end of which is connected to the side plate, and the other end of which is in contact with the web of the steel column, and a guide groove is formed in the middle thereof; The elastic member formed by the rubber elastic body further comprises a metal spring or a metal sheet arranged in the rubber matrix of the rubber elastic body.
[0007] Compared with the prior art, a new type of sound barrier unit panel provided by the present invention has the following advantages: an elastic member is arranged between the outer shell side panel and the steel column of the new type of sound barrier unit panel, that is, the elastic member generates a pre-tightening pressure on the steel slot to ensure that the unit panel is firmly positioned between adjacent columns, and at the same time, the elastic member has a compressive deformation performance. After the unit panel is impacted, under the action of the elastic member, a small buffering displacement can be generated to reduce the impact damage of the wind pressure load on the unit panel. At the same time, the elastic member has a damping effect, reduces vibration and noise, and prevents the unit panel from being deformed, broken, or even falling off due to excessive stress. At the same time, there are many options for elastic parts, such as one or more metal springs, metal shrapnel, rubber elastomers or air springs arranged on the side panels, etc., as long as the pre-stressing and tightening function can be achieved, it has the advantages of simple and compact structure, easy installation and use, economy, safety and durability; because the elastic component can ensure that the sound barrier unit plate is always in the center position between the two steel columns, the risk of the sound barrier unit plate being stuck at one end of the two steel columns and falling off at the other end due to pulsating impact is eliminated. Therefore, it can be widely used in special structures with large displacement and large displacement such as bridge expansion joints. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 This is a structural schematic diagram of a new type of sound barrier unit plate of the present invention Figure 2 It is a schematic diagram of the structure of a unit plate in which the elastic member is a metal spring; Figure 3 It is a schematic diagram of the unit plate structure in which the elastic member is an air spring. DETAILED DESCRIPTION
[0009] The structure and working principle of the new sound barrier unit plate provided by the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0010] In the description of the present invention, unless otherwise specified, the orientation or positional relationship indicated by the terms "outside", "side", etc. is based on the orientation or positional relationship shown in the drawings and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0011] It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0012] like Figure 1 As shown, the structure of the new sound barrier unit panel includes an outer shell and a sound absorber 3 arranged in the outer shell. An elastic member is arranged between the side panel 11 of the outer shell and the steel column 2. The elastic member includes one or more metal springs 4, metal springs 7, rubber elastomers or air springs 8 arranged on the side panel 11.
[0013] Its working principle is as follows: the novelty of the sound barrier unit plate lies in that an elastic part is provided between the side plate 11 of the outer shell and the steel column 2. The outer shell is generally composed of a panel 12, a back plate 13 and a panel frame. The side plates 11 are located on both sides of the frame and are positioned with the slots of the steel column 2. The elastic part is between the side plates 11 and the steel slots to play a role of pre-compression and tightening. When the sound barrier is subjected to wind pressure load, the unit plate can be displaced and buffered between adjacent steel columns 2. The elastic part is deformed and has the effect of damping and vibration reduction, thereby strengthening the protection of the plate and extending its service life. At the same time, under the action of the elastic component, the sound barrier unit plate is centered between the two steel columns, eliminating the risk of the sound barrier unit plate being stuck at one end of the two steel columns and falling off at the other end.
[0014] It should be noted that the elastic member can have various forms, such as one or more metal springs 4, metal springs 7, rubber elastomers or air springs 8, etc., which are arranged on the side plate 11. Those skilled in the art can make reasonable choices based on production conditions.
[0015] In the structure constituting the above-mentioned novel sound barrier unit panel, In one embodiment, the elastic member is composed of a metal spring 4 made of stainless steel, and there are multiple of them, which are evenly distributed vertically on the surface of the unit plate side plate 11, and the force is balanced. One end of the metal spring 4 is welded to the expansion shoe plate 5, and the other end of the metal spring 4 is welded to the side plate 11. The expansion shoe plate 5 is parallel to the side plate 11, and the expansion shoe plate 5 contacts the steel column 2, and the tension force is balanced, ensuring that the unit plate has a constant posture during the buffering displacement process to avoid instability and slippage; ——Furthermore, the expansion shoe plate is against the web 21 of the steel column 2, and the expansion shoe plate 5 and the web 21 are provided with through holes corresponding to the positions on the surface, and the metal spring 4 has a built-in guide rod 6, one end of the guide rod 6 is connected to the side plate 11, and the other end thereof passes through the through hole, that is, the guide rod 6 passing through the web 21 of the steel column 2 enhances the tightness of the connection between the unit plate and the steel column 2, and can guide the telescopic movement of the spring and the expansion shoe plate 5, so that it can play a stable elastic damping effect; The guide rods 6 arranged on the unit plates on both sides of the steel column 2 can be staggered in position, and the extension and contraction of the free ends do not affect each other. They can also share one guide rod 6, that is, the two ends of the guide rod are respectively connected to the opposite side plates 11 of two adjacent unit plates.
[0016] --like Figure 2 As shown, in another embodiment, the elastic member is composed of a metal spring sheet 7, whose cross section is a herringbone folded sheet, one end of which is connected to the side plate 11, and the other end of which is in conflict with the web 21 of the steel column 2. The metal spring sheet 7 is made by pre-processing, and has elastic tension at the bending part, so that the two ends can be tightened and supported, and the middle end 71 is connected to the panel 12 or the back plate 13. In order to achieve force balance, the metal spring sheet 7 is a plurality of short sections, which can be symmetrically arranged. Two adjacent metal spring sheets 7 have one middle end connected to the panel 12, and the other middle end connected to the back plate 13; The folding piece can also be long and equal to the side of the unit plate, and the bend in the middle forms a guide groove, which can timely discharge the upper water accumulation to prevent rainwater from entering the unit plate and impregnating and corroding the sound absorbing body; --like Figure 3 As shown, further, a rubber elastic body (rubber pad or rubber rod) or an air spring 8 (rubber airbag) is used to constitute the above-mentioned elastic member, and a plurality of metal springs or multi-layer metal plates are preferably provided in the rubber matrix of the rubber elastic body to enhance its elastic damping performance and extend its service life.
[0017] The above-described embodiments are only used to illustrate the technical solution of the present invention, and are not limiting conditions for the implementation of the present invention. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be included in the scope of the claims of the present invention.
Claims
1. A novel sound barrier unit plate, comprising a shell and a sound absorber arranged in the shell, characterized in that: An elastic member is arranged between the side plate of the shell and the steel column, and the elastic member includes one or more metal springs, metal springs, rubber elastic bodies or air springs arranged on the side plate.
2. A novel sound barrier unit plate according to claim 1, characterized in that: The elastic member formed by the metal spring further includes an expansion shoe plate connected to one end of the metal spring, the other end of the metal spring is connected to the side plate, and the expansion shoe plate is parallel to the side plate.
3. A novel sound barrier unit plate according to claim 2, characterized in that: The expansion shoe plate is pressed against the web of the steel column, and the expansion shoe plate and the web surface are provided with through holes corresponding to the positions, and the metal spring has a built-in guide rod, one end of the guide rod is connected to the side plate, and the other end thereof passes through the through hole.
4. The novel sound barrier unit plate according to claim 1 is characterized in that: The elastic member formed by the metal spring sheet is a folded sheet with a herringbone-shaped cross section, one end of which is connected to the side plate, and the other end of which is in contact with the web of the steel column, and a guide groove is formed in the middle thereof.
5. The novel sound barrier unit plate according to claim 1 is characterized in that: The elastic member formed by the rubber elastic body further comprises a metal spring or a metal plate arranged in the rubber matrix of the rubber elastic body.